Hex #40b595 or rgb(64,181,149) in RGB space is the tint of greenish cian. It has hue angle of 163.59 degrees, value = 71 and saturation = 65. #40b595 can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of cyan, 4 drops of green, 3 drops of white.
Nearest safe hex - #33cc99. Below you can see the block with #40b595 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40b595 to the mixer and play with it.